What are food grade plastic materials commonly used in injection molding mold?

Time:2019-10-09 10:33:38 / Popularity: / Source:

When it comes to food grade plastic, many laymen don't understand it, thinking it is a kind of plastic material that can be eaten directly. This is not the case. Ice cream made from ice cream model and moon cake made with flour mold is edible. Materials we need to make these food molds must be food grade. Plastic materials, no matter which food-grade test standards are passed, are impossible to eat directly. First, we must make clear that it is inorganic. So what are food grade plastic that we usually talk about? - Generally, plastic products that are in direct contact with food or human body, do not change molecular properties of plastics in high temperature or harsh environments, do not decompose and release substances that are harmful to human body. Such materials can be called food grade plastic materials.
food grade plastic 
National food grade test. US FDA food grade test, French DCCCRDF food grade test, German LFCB test, EU 10/2011 EU test food processing industry is the most widely used industry of plastic products. Because food is the closest thing to people's lives, variety and range of foods is wide, so there are many applications for food grade plastic products. What are food-grade non-toxic materials? Which are harmful materials? Which are safe and environmentally friendly materials? In fact, these problems are common among customers because of complexity of plastics industry and low popularity of plastics knowledge, many people do not understand plastics so much. They can't tell which ones are safe plastics, which may cause fear of using plastic products.
Below Gud Mould will give you a brief introduction for some of our commonly used food grade plastic materials.

First, PS

PS is commonly used in production of bowls of instant noodles boxes, snack boxes, - sub-food packaging boxes, etc. It has good cold resistance.

Safety hazard

PS box cannot be placed in microwave oven to prevent excessive temperature and release toxic substances. It is poor in acid and alkali resistance, not suitable for holding acidic foods to avoid decomposition of carcinogens.
food grade plastic 

Second, PET

PET plastics are commonly used in production of plastic bottles, beverage bottles and other products. Plastic water bottles and carbonated beverage bottles that people often buy are PET packaging products, which are food-grade safety plastic materials.

Safety hazards:

PET is only suitable for normal temperature or cold drinks. It is not suitable for overheated food. If temperature is too hot, bottle will release toxic substances, which may cause cancer. If PET bottle is used for a long time, it will automatically release toxic substances, so plastic beverage bottle will be thrown away immediately after use, and should not be used for long-term loading of other foods, so as not to affect health.

Third, PP

PP plastic is one of the most common plastics. It can be made into any food plastic packaging, such as food special plastic bags, food plastic boxes, food straws, food plastic parts, etc. It is safe, non-toxic, resistant to low temperature and high temperature. PP is the only plastic that can be placed in a microwave oven and has a high-strength and folding resistance of 50,000 times. It will not break under high altitude within -20C.

Fourth, PC

PC plastic can be used to make sports water bottles, bottles, etc. It is widely used in plastic containers and is a safe material.

Safety hazards:

Residual bisphenol A (hazardous substances) in PC, the higher the temperature, the more release and the faster speed. Therefore, do not use PC water bottles to hold hot water, so as not to increase speed and concentration of bisphenol A (if any).
food grade plastic 

Five, HDPE

HDPE plastic is commonly known as high-density polyethylene, which has a high service temperature and good hardness, mechanical strength and chemical resistance. It is a non-toxic and safe material, it is often used in the manufacture of plastic containers for food.

Safety hazards:

Plastic containers made by HDPE have characteristics of not easy to clean, so they are not used for recycling. It is best not to put it in microwave for heating.


LDPE plastic is commonly known as low-density polyethylene, and its products are odorless, non-toxic, and matte. It is commonly used in food plastic parts, food packaging composite film, food wrap, medicine, pharmaceutical plastic packaging.

Safety hazards:

LDPE is not heat resistant, and usually it will melt when temperature exceeds 110C. Such as: do not hear food in household food wrap to avoid oil in food from easily dissolving harmful substances in wrap film.

Seven, PVC

PVC: Currently rarely used for food packaging, it is best not to buy

Safety hazard:

When this material is used at high temperatures, it is easy to release harmful substances. Even during manufacturing process, it will be released. When toxic substances enter human body with food, they may cause diseases such as breast cancer and birth defects. Currently, containers of this material have been used less for packaged foods. If you are using it, don't let it get hot.
food grade plastic 

Eight, ppsu

Ppsu is a safe material, does not contain bisphenol a, and is widely used in medical equipment. Ppsu is a heat-resistant material with a heat-resistant temperature of 207 degrees, which can be used for repeated high-temperature boiling, steam sterilization, vacuum autoclave in hospitals, microwave oven heat sterilization and liquid disinfection.
Ppsu material is extremely resistant to chemicals, acid and alkali. It can withstand cleaning of general syrups and detergents without chemical changes. Ppsu bottle has been tested and confirmed to be free of bisphenol a toxin, it has three advantages of non-toxic from glass bottle, light and unbreakable from plastic bottle. which is a non-toxic glass bottle, and three superior characteristics of the plastic PC bottle are light and unbreakable. Ppsu is the most ideal and most secure bottle material, which is widely used by children in Japan, Europe and United States. This kind of bottle is light and resistant to falling, is the best in terms of safety, temperature resistance, hydrolysis resistance and impact resistance. But price is more expensive, variety is small, it is not easy to buy.

Nine, Tritan

Tritan is certified by US Food and Drug Administration (FCN No. 729) as an FDA-approved material for baby products in Europe and America. It does not contain BP A clear and transparent. If there is no gap, impact will be continuous. If there is a gap, impact strength will be between 650-980J/m depending on grade, which reach impact strength of PC. Excellent resistance to hydrolysis, low temperature heat distortion temperature (HDT@0.455MPa) is between 94C and 109C depending on the grade. Good fluidity and easy molding.

Ten, silicone

Food grade silica gel is a kind of environmentally friendly silica gel, non-toxic, odorless, high transparency, non-yellowing; soft, good elasticity, no kink resistance; no cracking, long service life, cold and high temperature resistance; higher tear resistance strength and superior electrical performance; it has advantages of high transparency, odorless, non-yellowing, no frosting, etc., especially solves problem of black rubber tube blooming, blue product fading, softness, high tear resistance, high insulation, abrasion resistance, high temperature resistance, flame retardancy, aging resistance, environmental protection, tensile strength, stable performance, etc.

Go To Top